Y \ X
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
10950
10949
10948
10947
10946
10945
10944
10943
10942
10941
10940
10939
10938
10937
10936
10935
10934
10933
10932
10931
10930